tools/web_search.py

from typing import Any, Optional
from smolagents.tools import Tool
# import duckduckgo_search
import ddgs


class DuckDuckGoSearchTool(Tool):
    name = "web_search"
    description = "Performs a duckduckgo web search based on your query (think a Google search) then returns the top search results."
    inputs = {'query': {'type': 'string', 'description': 'The search query to perform.'}}
    output_type = "string"

    def __init__(self, max_results=10, **kwargs):
        super().__init__()
        self.max_results = max_results
        try:
            # from duckduckgo_search import DDGS
            from ddgs import DDGS
        except ImportError as e:
            raise ImportError(
                "You must install package `duckduckgo_search` to run this tool: for instance run `pip install duckduckgo-search`."
            ) from e
        self.ddgs = DDGS(**kwargs)

    def forward(self, query: str) -> str:
        results = list(self.ddgs.text(query, max_results=self.max_results))
        if not results:
            raise Exception("No results found! Try a less restrictive/shorter query.")

        post = [
            f"[{r.get('title')}]({r.get('href')})\n{r.get('body')}"
            for r in results
        ]
        return "## Search Results\n\n" + "\n\n".join(post)